Abstract
Excess 210Pb was determined in six abyssal cores from the Eastern Atlantic, Hatteras Abyssal Plain, and Puerto Rico Trench. A bioturbation rate for each core was evaluated using the mixing model of Guinasso and Schink. The rates were compared to mixing rates evaluated for the same cores using 239,240Pu. In all cases, the excess 210Pb-derived mixing rates were lower than the plutonium-derived mixing rates. 239,240Pu was also present at greater depths than excess 210Pb. One possible explanation for these observations is the association of plutonium with particles of greater food value which are bioturbated at faster rates.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
